City of Greeley
EPA ID: CO0162321 · 132,310 people served · 17 ZIP codes
Not yet resolved: 1 EPA violation at City of Greeley, affecting about 132,310 residents.
Data: EPA SDWIS Last verified: 2026-04-02
Compliance Trajectory
Worsening · Risk tier: High · 95% chance of violation in next 12 months
Violations went from 3 (2021) to 2 (2023). The pattern suggests growing compliance challenges.
Service Area Map
Coverage area for City of Greeley Source: EPA SDWIS service area boundaries.
Service area boundary — Grade C
Service Area Demographics
The City of Greeley serves a community with a median household income of $95,056 and an estimated 354,886 residents across its service area.
🌊 Where Does Your Water Come From?
City of Greeley's water is drawn from rivers, lakes, or reservoirs. Surface water sources are more exposed to agricultural runoff, stormwater, and upstream discharges, but they typically receive more intensive treatment before reaching your tap.
About 1% of homes in Larimer County, Colorado rely on private wells rather than public water systems. Private well owners are responsible for their own water testing and treatment.
Wastewater Proximity Note: This service area ranks in the 61th percentile nationally for proximity to wastewater discharge points. Surface water sources near wastewater outfalls may face additional treatment challenges.
Infrastructure Risk
Detected Contaminants
How City of Greeley compares to EPA limits
What This Means For You
Contaminant 1009 at 2 mg/L exceeds the EPA maximum of 0.004 mg/L. Intestinal damage, bone damage. Consider reverse osmosis filtration.
Contaminant 1008 at 1 mg/L exceeds the EPA maximum of mg/L.
Stage 1 DBP Rule at 1 mg/L exceeds the EPA maximum of mg/L.
Lead and Copper Rule at 1 mg/L exceeds the EPA maximum of mg/L.
PFAS Detected in Service Area
PFAS ("forever chemicals") have been detected in water serving this system's area. 3 detections recorded. 3 exceed federal EPA limits (4 ppt for PFOA/PFOS).
Contaminant 1009 was detected in this water system. reverse osmosis filtration can reduce exposure.
Find a certified water filter →Comparable Water Systems
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Estimated Remediation Costs
Average estimated costs across ZIP codes served by this system
Based on national averages for common remediation projects. Actual costs vary by property. Only issues flagged by EPA, FEMA, or state data for each ZIP code are included.
System Overview
City of Greeley (EPA ID: CO0162321) is a community water system in Colorado that serves approximately 132,310 people from surface water sources.
This system provides water to 17 ZIP codes across 10 communities.
Average Home Safety Score: C (60/100)
Based on water quality violations, lead levels, and radon risk across all ZIP codes served by this system.
Violation History
Recent Violations
| Date | Contaminant | Type | Status |
|---|---|---|---|
| July 1, 2025 | Contaminant 1009 | Monitoring | Unresolved |
| October 1, 2024 | Stage 1 DBP Rule | Monitoring | Resolved |
| June 1, 2023 | Contaminant 1009 | Monitoring | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Contaminant 1009 | Other Violation | 2 | No |
| Contaminant 1008 | Other Violation | 1 | No |
| Stage 1 DBP Rule | Treatment Failure | 1 | No |
| Lead and Copper Rule | Treatment Failure | 1 | No |
Lead & Copper
EPA Lead and Copper Rule sampling data for ZIP codes served by this system:
| ZIP Code | Lead Level | Exceeds Limit | Sample Date |
|---|---|---|---|
| 80631 | 0.003 mg/L | No | N/A |
| 80632 | 0.003 mg/L | No | N/A |
| 80633 | 0.003 mg/L | No | N/A |
| 80634 | 0.003 mg/L | No | N/A |
| 80638 | 0.003 mg/L | No | N/A |
| 80639 | 0.003 mg/L | No | N/A |
Radon Risk in Service Area
Dominant radon zone for ZIP codes served by this system: Zone 1 (High Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Need help with your water quality?
Typical cost: Water test: typically $20–$50 (DIY kit) · Professional inspection: $150–$400
Find the Right Water FilterFree tip: Let cold water run for 2 minutes before drinking — this helps flush lead from your pipes.
ZIP Codes Served
Coverage: 13 ZIP codes confirmed via EPA Community Water System Service Area Boundaries v3 plus 4 additional ZIPs inferred from SDWIS registry data. The EPA-confirmed set is the most reliable; SDWIS-inferred entries may be narrower than the real deployment area.
- 80524 — Fort Collins
- 80525 — Fort Collins
- 80528 — Fort Collins
- 80534 — Johnstown
- 80535 — Laporte
- 80543 — Milliken
- 80547 — Timnath
- 80550 — Windsor
- 80615 — Eaton
- 80620 — Evans
- 80631 — Greeley
- 80632 — Greeley
- 80633 — Greeley
- 80634 — Greeley
- 80638 — Greeley
- 80639 — Greeley
- 80645 — La Salle
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for City of Greeley (CO0162321) on EPA.gov.
Frequently Asked Questions
Is City of Greeley water safe to drink?
City of Greeley has only monitoring/reporting violations, which are procedural in nature. The system meets federal health-based standards.
How many people does City of Greeley serve?
City of Greeley serves approximately 132,310 people across 17 ZIP codes in Colorado.
Where does City of Greeley get its water?
The primary water source is surface water.
Federal UCMR5 PFAS Monitoring: Tested Clean
This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). No PFAS compounds were detected.
Current MCL reflects the lowest state-enforceable limit (NYS 10 ppt for PFOA/PFOS, effective August 2020). The federal final MCL of 4 ppt for PFOA/PFOS (EPA April 2024 rule) is not enforceable until April 2029. Detections above 4 ppt but below 10 ppt are below current MCL but above the future federal limit.
Source: U.S. EPA UCMR5 (Unregulated Contaminant Monitoring Rule, 5th cycle) — per-system federal sampling, 2023–2025. EPA UCMR5 monitoring program →
Lead Service Line Inventory
Service line breakdown reported under the federal Lead and Copper Rule Improvements (LCRI) inventory requirement:
Federal LCRI rule (effective October 2024) requires every public water system to inventory its service lines and complete lead-line replacement within 10 years.
Source: EPA SDWIS Federal Service Line Inventory (Phase 2) · Submitted 2026
ZipCheckup is not affiliated with the utility or state agency. Inventory figures render verbatim from the public LCRI submission cited above; ZipCheckup does not perform inspections or replacements.
How Water Systems Appear in Rankings
Water systems are evaluated by violation history, contaminant detections, and service population. Larger systems with more service connections appear in more rankings.
Frequently Asked Questions
What You Can Do
Test your water
Home test kits can detect lead, bacteria, and other contaminants at your tap. Find the right filter →
Check your specific ZIP code
Water quality can vary within a system. View nearest ZIP report →
Contact your utility
City of Greeley (EPA ID: CO0162321) — request the latest Consumer Confidence Report or ask about specific contaminants.